ML14204A755
| ML14204A755 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 07/21/2014 |
| From: | Stone A M NRC/RGN-III/DRS/EB2 |
| To: | Pacilio M J Exelon Generation Co, Exelon Nuclear |
| Nestor Felix Adorno | |
| References | |
| IR-14-005 | |
| Download: ML14204A755 (9) | |
See also: IR 05000237/2014005
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III 2443 WARRENVILLE RD. SUIT
E 210 LISLE, IL 60532
-4352 July 21, 2014
Mr. Michael J. Pacilio
Senior VP, Exelon Generation Co., LLC
President and CNO, Exelon Nuclear
4300 Winfield Road
Warrenville, IL 60555
SUBJECT: DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 - NOTIFICATION OF AN NRC
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
AND REQUEST FOR INFORMATION
INSPECTION
REPORT 05000237/2014005; 05000249/2014005 Dear Mr. Pacilio
- On December 1, 2014, the U.S. Nuclear Regulatory Commission (
NRC) will begin the on
-site portion of the
Triennial Heat Sink Performance Inspection at your Dresden Nuclear Power Station, Units 2 and 3. This inspection will be performed in accordance with NRC baseline inspection procedure (IP) 71111.
07, "Heat Sink Performance."
In order to minimize the impact that the inspection has on the site and to ensure a productive
inspection, we have enclosed a request for documents needed for the inspection. The documents have been divided into three groups.
The first group lists information necessary for our initial inspection scoping activities. This
information should be available to the lead
inspector no later than October 6, 2014. By October 17, 2014, the inspector will communicate the initial selected set of approximately
2-3 risk significant heat exchangers.
The second group
is needed to support our in
-office preparation activities. This
set of documents, including the calculations associated with the selected heat exchangers, should be available at the Regional Office no later than November 17, 2014. This information should be separated for each selected component, especially if provide
d electronically (e.g., folder with component name that includes calculations, condition reports, maintenance history, etc
.). During the in
-office preparation activities, the inspector may identify additional information needed to support the inspection.
The last group includes the additional information above as well as plant specific reference
material. This information should be available onsite to the inspector
on December 1, 2014. It is also requested that corrective action documents and/or question
s developed during the inspection be provided to the inspector as the documents are generated.
M. Pacilio
-2- All requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous
heat sink performance
inspection. If no activities were accomplished
in that time period, then the request applies to the last applicable document in the previous time period.
It is important that these documents be as complete as possible, in order to minimize the number of documents requested during the preparation week or during the on
-site inspection.
The lead inspector for this inspection is Néstor J. Féliz Adorno. We understand that our
regulatory contact for this inspection is
G. Graff of your organization.
If there are questions about the material requested, or the inspection, please call Néstor J. Féliz Adorno at (630) 829-9739. Please send the information to the following e
-mail address nestor.feliz
-adorno@nrc.gov. A hard
-copy or compact disc (CD) with the required information is also an acceptable option.
This letter does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of
1995 (44 U.S.C. 3501 et seq.).
Existing information collection requirements were approved by the Office of Management and Budget Control Number
3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget Control Number.
" In accordance with Title 10, Code of Federal Regulations
(CFR), Section 2.390 of the NRC's "Rules of Practice," a copy of this letter and its
enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records System (PARS) component of NRC's Agencywide Documents Access and Management System (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading
-rm/adams.html
(the Public Electronic Reading Room).
Sincerely,
/RA Stuart Sheldon Acting For/
Ann Marie Stone, Chief Engineering Branch 2
Division of
Reactor Safety
Docket Nos. 50
-237; 50-249 License Nos. DPR
-19; DPR-25 Enclosure:
Triennial Heat Sink Performance
Inspection Document Request
cc w/encl: Distribution via LISTSERV
TRIENNIAL HEAT
SINK PERFORMANCE INSPECTION
DOCUMENT REQUEST
Enclosure
Inspection Report: 05000237/2014005; 05000249/2014005
Inspection Dates:
December 1
- 5, 2014 Inspection
Procedure:
Inspection Procedure 71111.07, "Heat Sink Performance"
Lead Inspector:
Néstor J. Féliz Adorno
(630) 829
-9739 nestor.feliz
-adorno@nrc.gov
I. Information Requested By October 6, 2014
1. List of the Generic Letter (GL) 89
-13, "Service Water System Problems Affecting Safety-Related Equipment,"
heat exchangers in order of risk significance.
2. Copy of heat exchanger performance trending data tracked for each GL 89
-13 heat exchanger.
3. List of Corrective Action Program
documents (with a short description) associated with GL 89
-13 heat exchangers, heat sinks,
silting, corrosion, fouling,
heat exchanger testing,
ultimate heat sink (UHS), and safety
-related service and closed cooling water systems
for the previous three
years or since the last Corrective Action Program document list was sent to the NRC for the previous heat sink performance inspection. The list should include all Corrective Action Program
documents not on the last Corrective Action Program
document list.
4. Copy of any self
-assessment done on any of GL 89
-13 heat exchangers,
UHS, and safety-related service and closed cooling water systems
since the last heat sink performance inspection.
5. Last two System Health Report(s) and maintenance rule system notebooks for all the GL 89-13 heat exchangers,
UHS, and safety-related service and closed cooling water systems.
6. List of engineering
-related operator workarounds
(with a short description)
associated with GL 89-13 heat exchangers
, UHS, and safety-related service and closed cooling water systems.
The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous
heat sink performance
inspection. 7. List of permanent and temporary modifications
(with a short description)
associated with GL 89
-13 heat exchangers
, UHS, and safety-related service and closed cooling water systems.
The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous heat sink performance
inspection. 8. List of risk significant non
-safety-related functions (with a short description) of the service water system and UHS.
TRIENNIAL HEAT
SINK PERFORMANCE INSPECTION
DOCUMENT REQUEST
2 II. Information Requested By November 17, 2014
1. Copies of the GL 89
-13 responses
and commitments
. 2. Copies of procedures developed to implement the recommendations of GL 89
-13 (e.g., the GL 89
-13 Heat Exchanger Program description).
3. Copies of the selected Corrective Action Program
documents.
4. For the specific heat exchangers selected:
a. Copy of system description and design basis document for the heat exchangers (as applicable).
b. Provide a list of calculations
(with a short description
), which currently apply to each heat exchanger
. c. Provide the calculations or evaluations that:
i. establish the limiting design basis heat load required to be removed by each
of these heat exchangers;
ii. demonstrate the heat exchangers capacity to remove the limiting heat load;
iii. correlate surveillance testing and/or inspection results from these heat exchangers with design basis heat removal capability (e.g., basis for surveillance test and/or inspection acceptance criteria);
iv. evaluate the potential for water hammer in each heat exchanger or associated piping; and
v. evaluate excessive tube vibration in each heat exchanger.
d. Copy of any operability determinations or other documentation of degradation associated with the heat exchangers or the systems that support the operation for the selected heat exchangers.
e. Copy of the design specification, heat exchanger data sheets, and vendor documents including component drawings applicable for the selected heat exchangers.
f. Copies of normal, abnormal, and emergency operating procedures associated with the selected heat exchangers.
5. For the UHS and the safety
-related service
and closed cooling
water system
s (or equivalent):
a. Copy of system description and design basis document (as applicable).
TRIENNIAL HEAT
SINK PERFORMANCE INSPECTION
DOCUMENT REQUEST
3 a. Copy of any operability determinations or other documentation of degradation associated with the UHS and the safety
-related service
and closed cooling
water systems. b. Copy of the document (e.g.
, UFSAR or Technical Requirements Manual) that states the maximum cooling water system inlet temperature limit that still allows full licensed power operation of the nuclear reactor.
c. Copy of the construction code and Design Specification. d. Copies of normal, abnormal, and emergency operating procedures associated
with the UHS and safety
-related service water systems including procedures for loss of these systems.
e. Copies of the procedures associated with in
-service test of the safety
-related service and closed cooling water pumps.
f. Copies of corrective
action documents associated with waterhammer or hydraulic transients in the service water system since the last heat sink inspection
. g. If available, provide an electronic copy of piping and instrumentation diagrams (P&IDs) for the service
and closed cooling
water system
s, including the intake structure.
h. Provide a list of calculations (with a short description), which currently apply to
UHS, service and closed cooling
water system
s. i. Copies of calculations and surveillances that determine the UHS reservoir capacity and heat transfer capability.
j. Copy of calculation addressing safety
-related service and closed cooling water systems flow balance.
k. Provide a list of instruments (with a short description) associated with automatic or alarm functions for the safety
-related service
and closed cooling
water systems and/or UHS.
6. A schedule of all inspections, cleanings, maintenance, or testing of
any safety-related heat exchanger to be performed
during the
on-site portion of
the inspection
. 7. Electronic
copies of the current Final Safety Analysis Report, Technical Specifications, Technical Specifications Basis, and Technical Report Manual.
III. Information Requested to be Available on First Day of Inspection, December 1, 2014
1. For the specific heat exchangers selected
- a. Copies of the two most recent completed tests and evaluation data confirming thermal performance for those heat exchangers
, which are performance tested.
b. Documentation and procedures that identify the types, accuracy, and location of any special instrumentation used for the two most recently completed thermal
TRIENNIAL HEAT
SINK PERFORMANCE INSPECTION
DOCUMENT REQUEST
4 performance tests for the heat exchangers (e.g., high accuracy ultrasonic flow instruments or temperature instruments). Include calibration records for the instruments used during these tests.
c. Information regarding any alarms
, which monitor on
-line performance.
d. Copy of the document describing the inspection results
of each heat exchanger
. The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous
heat sink performance
inspection. e. The cleaning and inspection maintenance schedule for each heat exchanger for the next
5 years. f. Copy of the operating procedure that ensures that the maximum cooling water system inlet temperature limit is not exceeded
. g. Copy of the periodic flow testing at or near maximum design flow. The requested documents are to be for the time period from the onsite inspection period back t
o the documents that were provided in response to the previous
heat sink performance
inspection. h. Copy of the document which identifies the current number of tubes in service for
each heat exchanger and the supporting calculation which establishes the maximum number of tubes which can be plugged in each heat exchanger
. i. Copy of the document establishing the repair criteria (plugging limit) for degraded tubes which are identified in each heat exchanger
. j. Copies of the documents that verify the structural integrity of the heat exchanger
(e.g., eddy current summary sheets, ultrasonic testing results, and visual inspection results
). k. Copies of those documents that describe the methods taken to control water chemistry in the heat exchangers
. 2. For the review of t
he safety-related service and closed cooling water systems and
UHS: a. Copies of calculations and surveillances that determine the UHS reservoir
capacity and heat transfer capability.
b. Copies of surveillance procedures and testing results performed
on the instrumentation relied upon to determine UHS reservoir capability. The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous
heat sink performance
inspection. c. Copies of the last two performance tests, such as the ASME in
-service test
, for the pumps, valves, and, if applicable, the towers
fans in the safety
-related service water system. If the components are not performance tested, please provide
documentation verifying performance by the methods actually used.
TRIENNIAL HEAT
SINK PERFORMANCE INSPECTION
DOCUMENT REQUEST
5 d. Copies of the documents that demonstrate that flow balance testing of the safety-related service water system
was performed
during the last three years. If the last flow test was performed longer than three years, then provide the last test. e. Copies of the documents that demonstrate that flow balance testing will continue to be periodically done in the future.
f. Copies of
procedures used to monitor interface valves between the safety-related sections of the service
and closed cooling
water systems, the non-safety-related sections,
and the associated results
. The requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous
heat sink performance
inspection. g. Copies of the procedures that verify the performance of risk significant non-safety functions
of the safety
-related service water system
and the associated results
. The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous
heat sink performance
inspection. h. Copies of the testing
, inspection, or monitoring
program procedures
for buried or inaccessible piping
of the service
and closed cooling
water system
s and the associated results
. The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous
heat sink performance
inspection. i. Copies of the ultrasonic test results and/or visual inspections that verify
the structural integrity of the service and closed cooling
water system
s piping. j. Copies of the procedures to monitor
, assess, and disposition active thru wall pipe leaks of the service
and closed cooling
water system
s, including structural evaluations and/or planned corrective actions.
k. History of any thru wall pipe leak on
the service
and closed cooling
water systems. The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous heat sink performance inspection. l. Copies of the documents associated with the periodic inspection program used to detect protective coating failure, corrosion, and erosion
of the service
and closed cooling water system
s. m. Copies of the IST vibration monitoring results and
operational history for deep draft vertical pumps, if applicable. The requested documents are to be for the time period from the onsite inspection period back to the
documents that were provided in response to the previous
heat sink performance
inspection. If the information requested above will not be available, please contact Néstor J. Féliz Adorno as soon as possible at (630) 829
-9739 or email nestor.feliz
-adorno@nrc.gov
.
M. Pacilio
-2- All requested documents are to be for the time period from the onsite inspection period back to the documents that were provided in response to the previous heat sink performance inspection.
If no activities were accomplished in that time period, then the
request applies to the last applicable document in the previous time period. It is important that these documents be as complete as possible, in order to
minimize the number of documents requested during the preparation week or during the on
-site inspection. The lead inspector for this inspection is Néstor J. Féliz Adorno. We understand that our regulatory contact for this inspection is G. Graff of your organization.
If there are questions about the material requested, or the inspection, please call Néstor J. Féliz Adorno at (630)
829-9739. Please send the information to the following e
-mail address nestor.feliz
-adorno@nrc.gov. A hard
-copy or compact disc (CD) with the required information is also an acceptable option.
This letter does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements
were approved by the Office of Management
and Budget Control Number
3150-0011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an
information collection requirement unless the requesting document displays a currently valid Office of
Management and Budget
Control Number
. In accordance with Title 10, Code of Federal Regulations
(CFR), Section 2.390 of the NRC's "Rules of Practice," a copy of this letter and its
enclosure will be available electronically for public inspection in the NRC Public Document Room or from the Publicly Available Records System (PARS) component of NRC's Agencywide Documents Access and Management System (ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading
-rm/adams.html
(the Public Electronic Reading Room).
Sincerely,
/RA Stuart Sheldon Acting For/
Ann Marie Stone, Chief
Engineering Branch 2
Division of
Reactor Safety
Docket Nos. 50
-237; 50-249 License Nos. DPR
-19; DPR-25 Enclosure:
TRIENNIAL HEAT SINK PERFORMANCE
INSPECTION DOCUMENT REQUEST
cc w/encl: Distribution via LISTSERV
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OFFICE RIII RIII NAME SSheldon for NAdorno:ls
SSheldon for AMStone
DATE 07/11/14 07/21/14 OFFICIAL RECORD COPY
Letter to Michael J. Pacilio from Ann Marie Stone dated July
21, 2014. SUBJECT: DRESDEN NUCLEAR POWER STATION, UNITS 2 AND 3 - NOTIFICATION OF AN NRC
TRIENNIAL HEAT SINK PERFORMANCE INSPECTION
AND REQUEST FOR INFORMATION
INSPECTION
REPORT 05000237/2014005; 05000249/2014005
DISTRIBUTION
RidsNrrDorlLpl3
-2 Resource
RidsNrrPMDresden Resource
RidsNrrDirsIrib Resource
Cynthia Pederson
DRPIII DRSIII Patricia Buckley